MESON Chess Problem Database

Problem Display
PID: 229030 (3R4/bQ6/p1nrpp2/8/PPk1P1NR/2pNp3/P1n1B3/3K4 w - - 0 1)

Ellerman, Arnoldo

Wiener Schachzeitung, 1926

3R4/bQ6/p1nrpp2/8/PPk1P1NR/2pNp3/P1n1B3/3K4

#2

11 + 10

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Rxd3+
      • 2.Bxd3#
    • 1...Rd4
      • 2.Qxa6#
    • 1...Bd4
      • 2.Sc1#
      • 2.Se1#
      • 2.Sb2#
      • 2.Sdf2#
      • 2.Sf4#
      • 2.Sc5#
      • 2.Sde5#
      • 2.Qxa6#
    • 1...S2d4
      • 2.Sb2#
      • 2.Sde5#
      • 2.Sxe3#
    • 1...S6d4
      • 2.Sb2#
      • 2.Sde5#
  • Tries
    • 1.Qxc6+?
      • 1...Kd4
        • 2.Rxd6#
      • 1...Bc5
        • 2.Qxc5#
      • 1...Rxc6!
  • Keys
    • 1.e5!
      • threat
        • 2.Sxe3#
      • 1...Rxd3+
        • 2.Bxd3#
      • 1...Kd4
        • 2.Sxf6#
      • 1...Kd5
        • 2.Sxf6#
      • 1...Rd4
        • 2.Qxa6#
      • 1...Bd4
        • 2.Sf4#
      • 1...S6d4
        • 2.Sb2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • R(g);CHECK,OGATE,P_SPINR(g),XS(D)::B(C),XR(g)
    • R(g);::QAB(J),XP(e)
  • Tries
    • Try
      • Q(J);CHECK,XS(f)
      • Vars
        • K(d);N_PINS(D),P-FLIGHT,P_SPINR(g)::R(K),XR(g)
        • B(j);N_GUARD,P_SPINB(j)::QAR1(J),XB(j)
      • Refutation
        • R(g);N_PINS(D),XQ(J)
  • Actual
    • P(G);
    • Threat
      • R(I)+S(H),DCHECK,XP(c)
    • Vars
      • R(g);CHECK,OGATE,P_SPINR(g),XS(D)::B(C),XR(g)
      • K(d);N_PINS(D),P-FLIGHT,P_SPINR(g)::R(I)+S(H),XP(i)
      • K(d);N_PINS(D),P_SPINR(g),P_SPINS(f),S_FLIGHT::S(H),XP(i)
      • R(g);::QAB(J),XP(e)
      • B(j);N_PINS(D),SBLOCK::B(C)+S(D)
      • S(f);N_PINS(D),SBLOCK::B(C)+S(D),DCHECK
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Developed and maintained by Brian Stephenson.
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